Answer: postman

AnswerCrossword Clue
POSTMAN

"Seinfeld" nemesis Newman, e.g.

POSTMAN

He "rings twice"

POSTMANHe rings twice
POSTMAN

Mail carrier

POSTMAN
Unseen title character of a Cain novel
POSTMAN
G. P. O. worker.
POSTMANImportant government worker.
POSTMANHe makes house calls.
POSTMANCivil-service ringer
POSTMANMailer's go-between
POSTMAN"The ... Always Rings Twice": Cain
POSTMANHe who "always rings twice"
POSTMANRepetitive bell-ringer
POSTMANDaily neighborhood sight
POSTMANOne who "always rings twice," in an old movie
POSTMANOne pushing the envelope?
POSTMANHe pushes the envelope